Interface Summary
Interface	Description
VAppearance	An object that represents a particular system appearance and provides access to its current system color values and the appearance settings those colors are based on.

Class Summary
Class	Description
AppearanceData	Data associated with a particular appearance in a given context.
AppearancesData	An immutable description of known appearance data.
AppearanceSettings	An immutable collection of system settings whose values can impact the system color values for a given appearance.
Handlers	An immutable collection of objects that may be invoked in response to some change.
HandlerStore
VAppearances	This class keeps track of macOS appearances and provides access to their attributes.
VAppearances.AppearanceChangeEvent	A change event that identifies a newly available appearance.